Overview
The L293D is a monolithic integrated high voltage, high current four-channel driver designed by STMicroelectronics. It is capable of accepting standard DTL or TTL logic levels and driving inductive loads such as relays, solenoids, DC and stepping motors, and switching power transistors. The device features an enable input for each pair of channels, allowing it to be used as two bridges, and includes internal clamp diodes for protection. It is suitable for switching applications at frequencies up to 5 kHz and is available in a 16-lead plastic DIP package with heatsinking capabilities.
Key Specifications
| Specification | Value |
|---|---|
| Motor Type | Brushed DC |
| No of Outputs | Quad |
| Output Current-Max | 600 mA |
| Supply Current | 16 mA |
| Clock Frequency-Max | 5 kHz |
| Rated Power Dissipation | 4 W |
| Supply Voltage-Max | 36 V |
| Supply Voltage Range | 4.5 V to 36 V |
| Fall Time | 250 ns |
| Rise Time | 250 ns |
| Turn-off Delay Time | 200 ns |
| Turn-on Delay Time | 750 ns |
| Operating Temp Range | -40°C to +150°C |
| Package Style | POWERDIP-16 |
| Mounting Method | Through Hole |
Key Features
- Internal clamp diodes for protection
- 600 mA output current capability per channel
- 1.2 A peak output current (non-repetitive) per channel
- Enable facility for each pair of channels
- Overtemperature protection
- Logical '0' input voltage up to 1.5 V (high noise immunity)
Applications
The L293D is designed for a variety of applications involving the control of inductive loads. These include:
- Driving relays and solenoids
- Controlling DC and stepping motors
- Switching power transistors
- General-purpose switching applications up to 5 kHz
Q & A
- What is the L293D? The L293D is a monolithic integrated high voltage, high current four-channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads.
- What are the key features of the L293D? Key features include internal clamp diodes, 600 mA output current capability per channel, enable facility, overtemperature protection, and high noise immunity.
- What is the maximum output current of the L293D? The maximum output current is 600 mA per channel, with a peak output current of 1.2 A (non-repetitive) per channel.
- What is the operating temperature range of the L293D? The operating temperature range is -40°C to +150°C.
- What package types are available for the L293D? The L293D is available in a 16-lead plastic DIP package and a 20-lead surface mount package (L293DD).
- What are the typical applications of the L293D? Typical applications include driving relays and solenoids, controlling DC and stepping motors, and general-purpose switching applications.
- What is the maximum supply voltage for the L293D? The maximum supply voltage is 36 V, with a range of 4.5 V to 36 V.
- Does the L293D have overtemperature protection? Yes, the L293D includes overtemperature protection.
- What is the maximum clock frequency for the L293D? The maximum clock frequency is 5 kHz.
- Is the L293D RoHS compliant? Yes, the L293D is RoHS compliant (Ecopack1 for PDIP-16 and Ecopack2 for SO-20 packages).
